Marine Interpretation Message
Issued by NWS

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000
AGXX40 KNHC 271854
MIMATS

MARINE WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
154 PM EST FRI FEB 27 2015

MARINE WEATHER DISCUSSION FOR THE GULF OF MEXICO...CARIBBEAN
SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND
64W...AND THE SW N ATLANTIC INCLUDING THE BAHAMAS.

...GULF OF MEXICO...

MODEL PREFERENCE: LATEST GFS BLENDED WITH PREVIOUS OFFICIAL
FORECAST. MWW3 FOR WAVE PARAMETERS. HIGH CONFIDENCE.

A COLD FRONT EXTENDS ACROSS THE FAR SE WATERS. A REINFORCING COLD
FRONT HAS REACHED THE NORTH-CENTRAL WATERS AND WILL DISSIPATE
LATER TODAY. NORTHERLY WINDS OF 20-25 KT ARE NOTED BEHIND THIS
REINFORCING COLD FRONT WITH SEAS TO AROUND 7 FT. FRESH TO STRONG
NE WINDS ARE ALSO NOTED PER SCATTEROMETER DATA NW OF THE MAIN COLD
FRONT...PARTICULARLY S OF 26N E OF 90W. THE COLD FRONT OVER THE
FAR SE WATERS WILL STALL OVER THE FLORIDA STRAITS TODAY AND SLOWLY
DISSIPATE THROUGH SAT. STRONG HIGH PRES OVER THE CENTRAL PLAINS OF
U.S. EXTENDS A RIDGE ACROSS THE GULF WATERS IN THE WAKE OF THE
FRONT. PRES GRADIENT BETWEEN THE RIDGE AND THE FRONT WILL BE THIGH
ENOUGH TO SUPPORT FRESH TO STRONG NE WINDS ACROSS THE N WATERS
THROUGH SAT NIGHT WITH BUILDING SEAS TO 9 FT...THEN WINDS WILL
DIMINISH ON SUN AS HIGH PRESSURE CONTINUES TO MOVE EASTWARD. SE
RETURN FLOW WILL SET UP OVER THE WESTERN WATERS EARLY NEXT WEEK
AND PREVAIL AHEAD OF A COLD FRONT EXPECTED TO MOVE INTO THE NW
WATERS THE MIDDLE OF NEXT WEEK.

...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN
55W AND 64W...

MODEL PREFERENCE: LATEST GFS BLENDED WITH PREVIOUS OFFICIAL
FORECAST. MWW3 FOR WAVE PARAMETERS. HIGH CONFIDENCE.

A WINDSAT PASS FROM AROUND 1130 UTC PROVIDED OBSERVATIONS OF GALE
FORCE WINDS NEAR THE COAST OF COLOMBIA WITH FRESH TO STRONG WINDS
BLOWING ACROSS MOST OF THE EAST AND CENTRAL CARIBBEAN. GENTLE TO
MODERATE SE WINDS PREVAIL ACROSS THE NW CARIBBEAN ON THE SE SIDE
OF THE COLD FRONT LOCATED OVER THE FAR SE GULF OF MEXICO.
WINDS WILL CONTINUE TO PULSE TO MINIMAL GALE FORCE NEAR THE COAST
OF COLOMBIA DURING THE NEXT SEVERAL DAYS...PARTICULARLY DURING THE
OVERNIGHT AND EARLY MORNING HOURS AS A STRONG RIDGE BUILDS N OF
THE FORECAST AREA. THE BUILDING RIDGE WILL ALLOW TRADES TO
INCREASE FROM THE TROPICAL N ATLC THROUGH THE SW CARIBBEAN TONIGHT
THROUGH SUNDAY...THEN DIMINISH SLIGHTLY ACROSS THE TROPICAL N ATLC
AND EASTERN CARIBBEAN LATE SUNDAY AND MONDAY AS THE SUBTROPICAL
RIDGE OVER THE CENTRAL ATLC WEAKENS AND STRONGER RIDGING BUILDS
FARTHER WEST OVER THE CAROLINAS...WHICH IN TURN WILL ALLOW FOR
FRESH TO STRONG WINDS ACROSS THE S CENTRAL...SW AND NW CARIBBEAN
THROUGH EARLY NEXT WEEK. EXPECT BUILDING SEAS UP TO 10 FT E OF
THE LESSER ANTILLES DURING THE UPCOMING WEEKEND DUE TO A
PERSISTENT TRADE WIND FLOW ACROSS THE TROPICAL ATLANTIC WATERS.
EXPECT BUILDING SEAS OF 12-14 FT NEAR THE COAST OF COLOMBIA TONIGHT...
AND SEAS OF 13-15 FT SAT NIGHT INTO SUN MORNING...AND SUN NIGHT
INTO MON MORNING.

...SW N ATLANTIC INCLUDING THE BAHAMAS...

MODEL PREFERENCE: LATEST GFS BLENDED WITH PREVIOUS OFFICIAL
FORECAST. MWW3 FOR WAVE PARAMETERS. HIGH CONFIDENCE.

A RIDGE PREVAILS OVER THE EASTERN FORECAST WATERS WHILE A COLD
FRONT EXTENDS FROM NEAR BERMUDA TO THE STRAITS OF FLORIDA.
MODERATE TO FRESH SOUTHWESTERLY WINDS ARE JUST AHEAD OF THE
FRONT WHILE MODERATE TO FRESH NORTHERLY WINDS ARE NOTED BEHIND THE
FRONT. WINDS INCREASE TO 20-25 KT ACROSS THE SOUTH WATERS MAINLY S
OF 22N AND ALONG THE SOUTHERN PERIPHERY OF THE RIDGE THAT EXTENDS
FROM A STRONG HIGH PRES OF 1040 MB LOCATED NEAR THE AZORES. SEAS
ARE IN THE 8-9 FT RANGE OVER THE NE WATERS...AND 5-7 FT OVER THE
REMAINDER OF THE WATERS OUTSIDE THE BAHAMAS. SEAS ARE IN THE 1-3
FT RANGE W OF THE BAHAMAS. THE FRONT WILL LIFT NORTHWARD AND ALIGN
ALONG 27N EARLY SUN BEFORE DISSIPATING SUN NIGHT. RIDGING WILL
EXTEND ALONG 30N MON BEFORE SHIFTING TO A LINE FROM BERMUDA TO
SOUTH FLORIDA BY TUE NIGHT. EXPECT INCREASING WINDS ACROSS THE NW
WATERS TONIGHT THROUGH EARLY SUN. MARINE GUIDANCE SUGGESTS NE
WINDS OF 20-25 KT AND SEAS TO 10 FT BY SAT.

$$

.WARNINGS...ANY CHANGES IMPACTING COASTAL NWS OFFICES WILL BE
COORDINATED THROUGH AWIPS 12 PLANET CHAT OR BY TELEPHONE:

.GULF OF MEXICO...
     NONE.

.CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN
55W AND 64W...
.AMZ031...CARIBBEAN FROM 11N TO 15N BETWEEN 72W AND 80W INCLUDING COLOMBIA BASIN...
     GALE WARNING TODAY INTO SUN.
     GALE CONDITIONS POSSIBLE SUN NIGHT INTO TUE.

.SW N ATLANTIC INCLUDING THE BAHAMAS...
     NONE.

$$

*FOR DETAILED ZONE DESCRIPTIONS PLEASE VISIT:
HTTP://WWW.NHC.NOAA.GOV/ABOUTTAFBPROD.SHTML#OWF

NOTE: GRIDDED MARINE FORECASTS ARE AVAILABLE IN THE
NATIONAL DIGITAL FORECAST DATABASE (NDFD) AT:
HTTP://WWW.NHC.NOAA.GOV/MARINE/GRIDS.PHP

FOR ADDITIONAL INFORMATION PLEASE VISIT:
HTTP://WWW.HURRICANE WARNINGS.GOV/MARINE

$$

.FORECASTER GR. NATIONAL HURRICANE CENTER.



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